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iwlwifi: mvm: simplify iwl_mvm_get_wakeup_status() return 

The return value in iwl_mvm_get_wakeup_status() is a bit unclear in
that it's not obvious that we don't leak fw_status in some cases.
Use fw_status directly with ERR_PTR() and return only it, that way
the compiler has a chance of proving that it's uninitialized (if it
ever is due to new changes.)

Additionally, this removes a smatch warning since smatch couldn't
figure out that fw_status can't, in fact, leak here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Johannes Berg 2015-03-03 20:23:47 +01:00 committed by Emmanuel Grumbach
parent 0c2ae049ae
commit e111e96857
1 changed files with 4 additions and 4 deletions
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8
drivers/net/wireless/iwlwifi/mvm/d3.c
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@ -1599,7 +1599,7 @@ iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
/* RF-kill already asserted again... */
if (!cmd.resp_pkt) {
ret = -ERFKILL;
fw_status = ERR_PTR(-ERFKILL);
goto out_free_resp;
}
@ -1608,7 +1608,7 @@ iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
len = iwl_rx_packet_payload_len(cmd.resp_pkt);
if (len < status_size) {
IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
ret = -EIO;
fw_status = ERR_PTR(-EIO);
goto out_free_resp;
}
@ -1616,7 +1616,7 @@ iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
if (len != (status_size +
ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4))) {
IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
ret = -EIO;
fw_status = ERR_PTR(-EIO);
goto out_free_resp;
}
@ -1624,7 +1624,7 @@ iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
out_free_resp:
iwl_free_resp(&cmd);
return ret ? ERR_PTR(ret) : fw_status;
return fw_status;
}
/* releases the MVM mutex */